Bobbin.



T. P. WALSH.

BOBBIN.

Patented May 10, 1910.

rnonas r. wansn, or Bosron, Massacnusnrrs, assrenoa T0 WALSH-Bazaar.coiaror TION, or PORTLAND, Marnie.

BUBlBIItl'.

Specification of Letters Patent. .Pgfientedl lWa y 1U, 191% Applicationfiled November 20, 1909. Serial 1V0. 529,055.

To all whom it may concern:

Be it known that I THoMAs lP. WALSH, a citizen of the United States,an'dresident of Boston, in the county of Suffolk and State of Massachusetts,have invented an Improvement in Bobbins, of which the followingdescription, in connection with the accompanying drawings, is aspecification, like characters on the drawings representing like parts.

Great inconvenience and expense have heretofore been occasioned by thefact that there is always left on bobbins a small body of yarn, which isusually unwound or cut away by hand. The ordinary practice is to deliverthe bobbins, as they drop from or are removed from the looms, to boys,who cut the yarn remnants from the bobbins. by means of sharp knives.The knives necessarily cut into the yarn-receiving surface of r thebobbin more or less, thereby roughening the bobbin and soon spoiling it.Aside, however, from the destruction of bobbins, this removal of theyarn bodies from the bobbins is expensive, as the average mill re uiresa large number of boys constantly per orming this unhealthful work.

Accordingly it is the object of my present invention to provide a bobbinwhich will greatly facilitate the removal of the yarn, even though byhand, and which is primarily inten ed for use in automatic machines (asexplained in my machine application) which handle the bobbins in largenumbers, and with great rapidit strips therefrom all the yarn withoutthe s ightest injury to the bobbin, thereby saving the large expensementioned as well as preventing the loss of the bobbins.

Stated in general terms, in invention resides in providing, inthe bobin, a shallow groove, running lengthwise of the bobbin and terminatingshort of the yarmdelivery central vertical longitudinal section; Fig. 3is an enlarged cross sectional view thereof;

and Fig. 4 1s a view similar to Fig. 1 show ing my invention applied toa diiferent form of usual bobbin.

The bobbin itself, in its general shape and construction, may be of anyusual or preferred kind, being herein shown. in Figs. 1

.to 3 as comprising a butt end or holding ofthe bobbin. The remnant ofyarn which a is usually lefton a bobbin when the latter is ejected orremoved from a loom is indicated at 6. This body of yarn is sometimeslarge and sometimes small being at times considerably tangled an atother times even, sometimes being in a com act bunch or heap, and atother times sprea out thin as shown in the drawings, the result beingthat 'when removed by a knife in the hands of aboy, according to theusual custom, he soon gets into the habit of slashing into the bobbinitself'with one or. more cuts, more or less ill directed. I have foundthatby cutting from the inside out the yarn may be instantly removed bya Sharp knife without any possi bility of'injuring the bobbin, thisoperation, moreover, being positive, so that all the am is removed atonecut. This is carrie out in my machine above alluded to, in which I I I iprovide means to enga e a groove 1n the bobbin for automatical ypositioning the bobbin with relation to the machine and with relation tothe. knife, and for also directing the knife.

Accordingly my present invention consists in providing a bobbin withsaid longitudinal groove as indicated at 7 (which may have any desiredcross-sectional shape, with a square, round, pointed or other bottom ornot), said groove terminatin at 8 back from the extreme end 9 asufiicient distance to leave the surface of the yarn delivery end 4peripherally smooth and entirely uncut throughout its circumference.Preferably also it slopes upwardly at said point 8. The groove 7 haspreferably .a uniform depth I 2 and 3, so that the edge of the groovewill not become splintered or otherwise roughened or injured inuse, butwill remain in perfect yarn-receiving condition.

My invention is intended for bobbins of whatever material they may bemade.

In use, as the bobbins, which have dropped or been removed from thevarious looms throughout the factory, are collected, they are taken tomy machine, or, it may be, to

I the hand operator, and a suitably shaped without slit, cut orindentation throughout .removed alike from all the bobbins.

knife is quickly run along the groove 7 beneath the yarn 6, cutting itaccurately and instantly entirely away from the bobbin. The blunt backof the knife slides along the bottom of the groove, while the sharp edgeof the knife projects obliquely from the groove in exactly the rightposition to cut the yarn to the best advantage. This entirely eliminatesall danger of injury t-othe bobbins, facilitates the removal of the amwith great rapidity, and insures that it is all By the term groove, itwill be understood that I include any and all slitlike formationscapable of receiving and directing a knife, whether shallow or not, andwhether extending only partially or entirely through the shell, exceptwhen expressly stated to the contrary in the claims. Also it will beunderstood that by specifying that the groove shall terminate short ofthe yarn-delivering end of the bobbin, I mean merely that the bobbinshall be provided with a smooth peripheral yarn-receiving end, or inother words, irrespective of how the grooves may be originally made orformed in the bobbin, its open and exposed side at the periphery oryarn-engaged surface of the bobbin shall not extend to the extreme end 9of the finished bobbin so as to interfere with the proper delivery .ofthe thread or yarn.

, It is essential that the delivery end 9 of the bobbin shall beperfectly smooth and its-entire periphery in order that the yarn maymaintain continuous sliding and whirlin engagement around said end as itis pu led axially from the bobbin in the weaving process, andaccordingly the groove- 7 does not continue throughout the entire len thof the bobbin, but, on the other hand, it gins as close as practicableto this smooth delivery end of'the bobbin in order that the knife,especiall when operated in connection with my mac ine, may have freemovement for a considerable distance before engaging and cutting through:the yarn. The yarn remnant always gathers at and adjacent the butt endor holding end 1 of the bobbin at the oint where the cylindrical bodyportion of the bobbin verges or curves outwardly into said butt end, andaccordingly this long extent of groove which normally extends beyondsaid yarn remnant when the spindle has been substantially exhausted ofits yarn, serves as a means for giving directed momentum to the knife asits point is quickly slid along said groove on the metal track or lining12 therein.

Having described my invention, what I claim as new and desire to secureby Letters Patent is:

1. A loom bobbin, provided at its butt end with holding means and thenceextending in a long slender yarn-supporting body terminating in asimilarly slender smooth delivery-end Whose peripheral arn-engagingsurface is uncut and uni'n ented, said slender body having asubstantially uniform diameter from said butt end throughout itsyarn-receiving extent to said smooth delivery-end, and provided with alongitudinal groove beginnin in said' uniformdiameter ortion oftheImbbin adjacent, but not entering, said smooth delivery-end andcontinuing lengthwise of the slender portion and also lengthwise of atleast a part of the butt end of the bobbin, whereby the yarn has freeunimpeded axial delivery lengthwise over said smooth delivery-end incontinuous whirling contact with its smooth surface, peripherallythereof, and, when all delivered exce t the usual yarn remnant adjacentthe utt end, a long extent of said groove is exposed between saidremnant and the said smooth delivery-end, for giving directed momentumto a strippin knife run quickly along said groove or cutting throughsaid remnant.

2. A loom bobbin, provided at its butt end with holding means and thenceextending in a long slender yarn-supporting body terminating in asimilarly slender smooth delivery-end Whose peripheral yarn-en agingsurface is uncut and unindented, said s ender body having asubstantiallyuniform diameter from said butt end throughout its yarnreceiving extentto said smooth deliveryend, and provided with a longitudinal groovebeginning in said uniform-diameter portion of the bobbin adjacent, butnot entering, said smooth delivery-end and continuing lengthwise of theslender portion and also lengthwise of at least a part of the butt endof the bobbin, and a metal track permanently lining said groove for thepoint of a knife to travel on, whereby eaaeae the yarn has freeunimpeded axial delivery lengthwise over said smooth delivery-end incontinuous whirlin contact with its smooth surface, peripheral ythereof, and, when all delivered except the usual yarn remnant adjacentthe butt end, a long extent of said groove is exposed between saidremnant and the said smooth delivery-end, for giving directed momentumto a stripping kniferun quickly along said groove for cutting it throughsaid remnant. In testimony whereof, have signed my 7 name to thisspecification, in the presence of two subscribing witnesses. e

V THOMAS P. WALSH.

Witnesses:

M. J. SPALDING, EDWARD MAXWELL.

